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Sensor application development using Crossbow sensor products

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Sensor application development using Crossbow sensor products. Aiyaz Paniwala CSCI5931. Topics. Overview of Crossbow Wireless Sensor equipment Description of the MoteWorks platform Requirements for the Application Building A Simple Sensing Application.

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Sensor application development using Crossbow sensor products

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  1. Sensor application development using Crossbow sensor products Aiyaz Paniwala CSCI5931

  2. Topics • Overview of Crossbow Wireless Sensor equipment • Description of the MoteWorks platform • Requirements for the Application • Building A Simple Sensing Application

  3. Overview of Crossbow Wireless Sensor Equipment • Sensor and Data Acquisition Boards – MTS101,MTS300,MTS310,MTS400……. • Processor/Radio Platforms or “Motes” – MPR300,MPR310,MPR400,MPR410…… • Gateways and Network Interfaces – MIB500,MIB510,MIB600………….

  4. MTS310 • Used at our lab • Commonly used name is micasb • Sensor and Functions include : • Accelerometer • Light • Magnetometer • Microphone • Sounder • Thermistor

  5. MPR410 • Commonly known as MICA2 • Operating frequency range is 433 – 435 MHz • Uses • Atmel ATMega128L processor • Chipcon CC1000 Radio Transciever • 512kB Nonvolatile Memory

  6. MIB510 • Commonly known as Serial Port Programmer • Connectors on top (51 pin Hirose Connector, 19 pin Circular Connector)-MICA,MICA2,MICA2DOT • Connectors on bottom(51-pin connector bottom-side) • Programming port and Data Port (Serial RS232)

  7. Description of MoteWorks Platform • Uses Three distinct software tiers • Mote Tier – XMesh • Sever Tier – XServe • Client Tier – MoteView • Also includes : • Low Power Operating System – TinyOS • Software Development Tools

  8. Software Development in Moteworks • Uses nesC(network embedded systems C) programming • nesC is an extension of C • Programs are built out of components. • Specification (bidirectional interfaces) • Implementation • Components are assembled

  9. Specification (Bidirectional Interfaces) • Interfaces provide a set of functions • Commands-These functions are to be implemented by the interface’s provider • Events – A set to be implemented by the interface’s user • This means completion of all commands is signaled by an event

  10. Requirement for an Application • One or more MICA Motes • One gateway/programming board • A windows PC with MoteWorks

  11. Building A Simple Sensing Application • Minimum 5 files in any application’s directory: • Makefile • Makefile.component • Application’s configuration written in nesC • Application’s module written in nesC • README(optional) • Makefile remains same • Makefile.component depends on the top level application component specified in the configuration

  12. Top level configuration file • Saved with .nc extention • Contains the components and their wiring • The StdControl interface must always be implemented as the bare minimum for an application

  13. Example of Configuration file • MyApp_Timer.nc • First line specifies the components • The last two lines wire the TimerC and LedC components to the application’s module. • The module controls the Timer and LED devices through TimerC and LedsC functions.

  14. Application Module • Provides specifies the command • Uses specifies the events • Implementation initializes all the components.

  15. Building and Running the application • Use Programmer’s Notepad. • Select Tools > make mica2 • If successful we get “writing TOS image” in output • Select Tools>shell and type in make mica2 reinstall mib510,com1.

  16. A Simple Sensing Application • Compile and Install the Code (MyApp_Sensor.nc and MyApp_SensorM) • Two variations • if (call SendMsg.send(TOS_UART_ADDR,sizeof(XDataMsg),&msg_buffer) != SUCCESS) • if (call SendMsg.send(TOS_BCAST_ADDR,sizeof(XDataMsg),&msg_buffer) != SUCCESS)

  17. First Variation • Uses XServe to display sensor data • In Cygwin type xserve –devide=COM1 • All the sensor data(including those not available) get displayed • We get valid values for available sensing data

  18. Second Variation • Uses Radio hence XSniffer is used. • Connect a second Motes(node id 2) • Compile and install TOSBase.nc from /MoteWorks/apps/general/XSniffer • Make mica2 install,2 mib510,com1 • Using XSniffer detect output.

  19. References • MoteWorks Getting Started Guide • Introduction • Introduction to TinyOS and nesC • First Steps in nesC Programming • A Simple Sensing Application • Wireless Sensor Networks • Mesh Networking Right Out of the Box • Product Information Guide : Hardware

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